Stenothemus subnitidus, Švihla, 2005

Švihla, Vladimír, 2005, New taxa of the subfamily Cantharinae (Coleoptera: Cantharidae) from south-eastern Asia with notes on other species II, Acta Entomologica Musei Nationalis Pragae 45, pp. 71-110 : 97-98

Stenothemus subnitidus sp. nov.

( Figs. 60, 63 )

Type locality. India, Assam, Kalaktang, Mursing, 2288 m a.s.l.

Type material. HOLOTYPE: J, ‘ India, Kameg Nefa , Kalaktang, Mursing, Alt. 2288 m, 8.ix.1961, S. Biswas’ ( NHMB) . PARATYPE: J, ‘ India, Kameg Nefa, Kalaktang, Sangtoo vall., Alt. 2288 m, 11.ix.1961, S. Biswas’ ( NMPC).

Description. Coloration. Head sienna, apices of antennomeres 2-11 somewhat paler. Prothorax honey yellow, disc of pronotum darker, sienna-coloured. Meso- and metasternum, scutellum, legs and ventral part of abdomen sienna, elytra sienna and mottled with pale marks.

Male. Eyes of moderate size, protruding, head across eyes moderately narrower than pronotum, temples straight and convergent posteriorly.Antennae reaching two thirds of elytral length. Surface of head very finely imbricate-punctate, finely yellow pubescent, matt. Pronotum ca 1.15 times as wide as long, its anterior margin together with anterior corners widely rounded, lateral margins widely rounded, posterior corners nearly sharp, protruding, posterior margin almost straight. Surface of pronotum very finely punctate, very sparsely yellow pubescent, semilustrous, disc almost lustrous. Elytra very slightly dilated posteriorly, elytral nervation not developed, surface of elytra rugulose-lacunose and very finely punctate, with sparse, semirecumbent, yellow pubescence combined with brown erect setae, semilustrous. Aedeagus as in Figs. 60 and 63 , apices of parameres concave on ventral side (possibly an artefact). Female unknown.

Length J: 7.2-7.6 mm.

Differential diagnosis. Stenothemus subnitidus sp. nov. belongs to the S. harmandi species group. The differences from S. harmandi , its closest relative, and from other species of the group are summarized in the key below.

Etymology. Subnitidus (Latin) = semilustrous, named in reference to the semilustrous pronotum and elytra.

Distribution. India: Assam.

Figures

Figs. 59-63. 59-62 – dorsal part of aedeagus. 59 – Stenothemus harmandi (Bourgeois, 1902); 60 – S. subnitidus sp. nov.; 61 – S. holosericus sp. nov.; 62 – S. orbiculatus sp. nov. 63 – S. subnitidus sp. nov., paramere, lateral view.